<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

    <form action="login" method="post">
        <h3>登录</h3>
        <span>用户名</span>
        <input type="text" id="username" name="username"><br>
        <span>密码</span>
        <input type="password" id="password" name="password"><br>
        <input  type="submit" id="submit" value="提交">
    </div>


</form>


</body>
</html>